Drive-chain.



G. G. L L. C. BOWL.

DRIVE CHAIN..

APPLIGATION FILED JULY 23, 1913.

Patented Deo. 23, 1913.

.will Si 11 TENT einen.

GLENN G. HOWE AND ALOUIS C. HOWE, OF INDIANAPOLIS, INDIANA, ASSIGNORS TOLINK-BELT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DRIVE-CHAIN.

Specification of Letters Patent.

Fatcnted Dec. 23, 1913.

Application filed July 23, 1913. Serial No. 780,716.

To all 'whom t may concern Be it known that we, GLENN G. Hown and LouisC. llown, citizens of the United .'States, residing in Indianapolis,county of Marion, State of Indiana, have invented certain Improvementsin Drive Chains, of which the following is a specification.

This invention relates to certain improvements in chains of the type inwhich double headed pins connect the several links.

One object of our invention is to construct the chain so that the linkscan be readily detached and a section added or removed from the chain.

A further object of the invention is to construct the links so that whenthey are-in alinement the pins are held in position and cannot beaccidentally detached but by manipulating the links the pins can bereadily detached. `The linkscan be made from malleable iron or they canbe forged as desired.

In the accompanying drawings: Figure 1 is a plan view of our improvedchain; Fig. 2 is a side view; Figs. 3, 4, and 5 are plan viewsillustrating the links lin three dilierent positions and showing themethod of detaching the links; Fig. 6 is a transverse sectional view onthe line a-a, Fig. 1; Fig. 7 is a transverse sectional view on the linebwl), Fig. 5; Figs. 8 and 9 are detached perspective views of the twolinks; Fig. 10 is a perspective view of one of the pins; and Fig. 11 isa View of a modification.

The chain is made of a series 0f links 1 alternating with pairs oflinks. elements 2 of each pair are identical and are spaced apart forthe reception of the ends of the links l, as clearly shown in Fig. 2.

3, 3 are the pivot pins which connect the several links. The pivot pins,as illustrated ir. Fig. 10, have a round shaft 4 and a rectangular head5 at each end, as shown inv pensed with in some instances.

At each end of each link` element 2 is a flange 8 which extends on threesides of the slot 6 and the heads 5 of each pin 3 tit snugly between theside flanges and against the end dange. Thus, when the pins are in theposition illustrated in Fig. 1, they are The link prevented from turningby the neat lit of the heads in the space bounded by the flange. In someinstances the end flange may be omitted.

The ends 9 of the links 1 are preferablyr greater in width than the bodyportion of the link, as shown` and lit snugly between the two linkelements 2 so that when the link 1 is located between the two linkelements and the pin is in place, the heads ot the pin-rest in therecess formed by the flanges 8.

In order to prevent independent longitudinal movement of one link withrespect t0 the other a recess 10 is formed at each side of each link 1between the enlarged eud portion 0 and a flange ll, and ribs 'l2 at theends of the link elements 2 extend into the recesses 10, as clearlyshown in Fig. 2. A rlhe pivot pins 3 are held with theinheads bctweenthe flanges and, consequently, cannot be detached without swinging oneof the links at an angle to the other to clear the ribs, as describedhereinafter.

If it is wished to detach the links and to remove one or more ot' thepins, then one ol the links is turned at right angles to the other as,for instance, in Fig. 3. This more ment releases the rib 12 from thecontrol of the flange 1l of the link 1 and when the link is in theposition illustrated in Fig` 3 it can be moved bodily with the pin 3 tothe position illustrated in Fig. 4. It can 'then be turned to theposition illustrated in Fig. 5, as the flange 11 will be back of the rib12 and the pin 3 can he turned so that its head will be in the positionillustrated in Fig. 5, and, as the head is narrower in width than theslot 6 in the link elements 2 or the cavity 13 in the link 1, the pinwill drop through the links, releasing-the two links. As many sectionsas desired can be detached in this manner and if it is necessary tolengthen the chain other sections can be added thereto.

In Fig. 2, we have shown the link elements 2 disconnected but they maybe connected by a web 14, as shown in Fig. 11 without departing from theessential features of the ini vention.

We claim:

1. The combination in a chain, of two links, one consisting of a singlelinkelement and the other of two link elements spaced apart; a doubleheaded pin connecting the two elements, the heads of the pin beingprevented from turning by being confined in the double link element; andmeans for preventing independent longitudinalmovement of one link withrespect to the other.

2. The combination in a chain, of two link elements spaced apart andeach having a socket at each end; a link located between the two linkelements; a double headed pin extending through an opening in the saidlink and through slots in the link elements; the heads of the pinresting in the sockets so as to prevent the pin Jfrom turning in thesaid link elements; a lateral recess inthe link; and a rib on one of thelink elements extending into the recess of the link and preventing thelinks from moving longitudinally, one with respect to the other.

3. The combination in a chain, of two link elements spaced apart andslotted longitudinally; a single link located between the two linkelements and having'a recess at one end; a. vdouble headed pin extendingthrough the slots inthe two link elements and the recess in the singlelink; a iiange on two sides of.

each link element arranged to engage the .heads ofthe pin and preventingthem from turning in the link elements; a flange on the link; and a ribon one link element engaging the iiangeso as to prevent longitudinalmovement of one link with respect to thel other, except when one link isturned at an angle to the other to shift the rib out of line with theflange.

4. The combination in a chain, of two slots in the 'link elements andthrough the opening in the link; means on the link elements engaging theheads of theV pin" and preventingthem from turning; a flange on eachside of the link spaced from the enlarged end to form a recess; and arib on each link element extending into the recess of the link so thatthe links are prevented from moving longitudinally, one with respect tothe other7 except when one link is turned at an angle to the other.

Intestiniony whereof; we have signed our naines to this specilication;in the presence of two subscribing witnesses.

GLENN G. HOWE. LOUIS C, HOW'E.

l/Vitnesses L. B. GALVELAGE, A. D.v THRASHER.

